Process for the preparation of adiponitrile from adipic acid and ammonia
Abstract
Abstract PROCESS FOR PREPARING ADIPONITRILE COMPRISING REACTING ADIPIC ACID AND AMMONIA AT 250 TO 550*C. IN A FLUIDIZED BED OF A SOLID DEHYDRATION CATALYST FLUIDIZED BY AMMONIA GAS, WHEREIN A PART OF AMMONIA GAS PREHEATED AT HIGH TEMPERATURES IS INTRODUCED INTO THE FLUIDIZED BED THROUGH A FUNNEL-SHAPED DISTRIBUTOR POSITIONED AT THE BOTTOM OF THE FLUDIZED BED; ADIPIC ACID IN FORM OF A HOT AQUEOUS SOLUTION IS SPRAYED INT THE FLUIDIZED BED THROUGH A NOZZLE FOR SPRAYING A HOT AQUEOUS SOLUTION OF ADIPIC ACID PROVIDED AT THE CENTRAL PORTION OF SAID DISTRIBUTOR; AND THE REST OF AMMONIA GAS PREHEATED AT HIGH TEMPERATURES IS INJECTED INTO THE FLUIDIZED BED AD GAS JET STREAM FROM AN INJECTION OPENING PROVIDED AT THE CENTRAL PORTION OF SAID DISTRIBUTOR AND AROUND SAID NOZZLE.
Inventors
- 👤 Yuichi Suzukawa
- 👤 Hisashi Kono
- 👤 Kenji Terai
- 👤 Atushi Kuribayashi
- 👤 Takazumi Niwa
Bibliographic Details
Claims Analysis
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